GB2113274B
(en )
1983-11-30
Improvements in or relating to underwater mining
ZA7624B
(en )
1976-12-29
Improvements in or relating to split cable-sleeves
HK56281A
(en )
1981-11-20
Improvements in or relating to timepieces
ZA775905B
(en )
1979-06-27
Improvements relating to 1-aryloxy-2-hydroxy-3-alkyleneaminopropanes
ZA77364B
(en )
1978-03-29
Improvements in or relating to advancing support
ZA774475B
(en )
1978-06-28
Improvements in or relating to line advance mechanisms
ZA776964B
(en )
1979-04-25
Improvements in or relating to fastening
HK65979A
(en )
1979-09-21
Improvements in or relating to cutters
ZA773928B
(en )
1978-05-30
Improvements in or relating to tyres
ZA771704B
(en )
1978-02-22
Improvements in and relating to accelerometers
ZA761136B
(en )
1977-02-23
Improvements in or relating to drills
ZA774778B
(en )
1979-03-28
Improvements in or relating to glycerokinases
ZA764191B
(en )
1977-07-27
Improvements in or relating to coal mining
HK1480A
(en )
1980-01-18
Improvements in or relating to frequency determination
ZA775816B
(en )
1979-06-27
Improvements relating to pyridobenzodiazepinones
ZA775699B
(en )
1979-04-25
Improvements in or relating to mine roof supports
ZA774654B
(en )
1978-06-28
Improvements in or relating to dartboards
GR60267B
(en )
1978-04-20
Improvements in or relating to anchors
ZA775250B
(en )
1979-04-25
Improvements in or relating to mine roof supports
ZA764387B
(en )
1977-09-28
Improvements in or relating to methods of mining
ZA771796B
(en )
1978-03-29
Improvements in and relating to accelerometers
ZA752898B
(en )
1977-04-27
Improvements in or relating to odometers
ZA765345B
(en )
1977-08-31
Improvements in and relating to strata reinforcement
ZA757213B
(en )
1976-11-24
Improvements in and relating to mining methods
ZA761555B
(en )
1977-03-30
Improvements in or relating to electroprecipitation